[GRASS-user] r.resamp.stats: how to count valid input pixels

[peifer]

Glynn Clements wrote
> Create a validity map with e.g.
> 
> 	r.mapcalc "valid = !isnull(input)"
> 
> then use r.resamp.stats method=average on that.

Thanks for the hint. 

After a second thought, I came up with something slightly different:
  r.reclass input # valid pixels (cat 0..100)= 1, nodata pixels (cat
254,255) = 0
then r.resamp.stats method=sum # to get the count of valid pixels



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